Procedure for improving properties of mechanical wood pulps

Details Procedure for improving properties of mechanical wood pulps Procedure for improving properties of mechanical wood pulps

D - Textiles, Paper

21

C

9/12

D21C 3/06 (2006.01) D21C 9/00 (2006.01)

Patent

CA 1145106

21 ABSTRACT OF THE DISCLOSURE Mechanical pulps in the form of RMP or, more pre- ferred, TMP, of improved properties suitable for substitu- tion for chemical pulp, especially in newsprint furnish, is obtained in a substantially pollution-free process by subjecting the mechanical pulp to chemical treatment using sodium sulphite solution. This treatment results in increased wet stretch and stress-strain properties while retaining high drainage and avoiding substantial yield loss.

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